I know this is economic jargon, but essentially, if you bring more women to the job market, you create value, it makes economic sense, and growth is improved. There are countries where it's almost a no-brainer: Korea, Japan, soon to be China, certainly Germany, Italy. Why? Because they have an aging population.

Gender-dominated environments are not good... particularly in the financial sector where there are too few women. In gender-dominated environments, men have a tendency to... show how hairy chested they are, compared with the man who's sitting next to them. I honestly think that there should never be too much testosterone in one room.

If female were working in the same proportion as men do, the level of GDP would be up 27 percent in a country like India, but also up 9 percent in Japan and up 5 percent in the United States of America. It's not just a moral issue, not just a philosophical issue. It just makes economic sense.

To me, leadership is about encouraging people. It's about stimulating them. It's about enabling them to achieve what they can achieve - and to do that with a purpose.